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Cognex DM302 - LED and Laser Wavelengths

Cognex DM302
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l The length of the thread may not exceed 5.4 mm.
l For a chosen lens, the distance from the C-mount shoulder to the bottom of
the lens may not exceed 5.4mm. Possibly a lens spacer is required.
l When using the C-Mount lens cover, lens dimensions including spacer and
filters may not exceed 32 x 42 mm (diameter x length).
To avoid accelerated aging of built-in illumination LEDs, which results in light intensity
degradation, consider the following duty cycle limits above 25°C (77°F):
l at 35°C (95°F): 4% duty cycle, for example, 750 µs exposure and 18493 µs
interval
l at 45°C (113°F): 2% duty cycle, for example, 350 µs exposure and 18093 µs
interval or 1000 µs exposure and 50000 µs interval
LED and Laser Wavelengths
The following table shows LED types and the related peak wavelengths:
LED λ [nm]
WHITE 6500K (Color Temperature)
BLUE 470
RED 617
HIGH POWER RED 617
IR 850
TORCHLIGHT- WHITE 2500-5000K(Color Temperature)
TORCHLIGHT - RED 625
The peak wavelength of the green laser is 515 nm.
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